Bump Postgresql Driver version to 42.7.2

Author: Corneil du Plessis

spring-cloud-dataflow-build/spring-cloud-dataflow-build-dependencies/pom.xml

@@ -33,7 +33,7 @@
 		<nimbus-jose-jwt.version>9.37</nimbus-jose-jwt.version>
 		<snappy-java.version>1.1.10.5</snappy-java.version>
 		<commons-compress.version>1.26.0</commons-compress.version>
-		<postgresql.version>42.4.3</postgresql.version>
+		<postgresql.version>42.7.2</postgresql.version>
 		<prometheus-rsocket.version>1.5.2</prometheus-rsocket.version>
 		<java-cfenv.version>2.3.0</java-cfenv.version>
 		<spring-cloud-services-starter-config-client.version>3.5.4</spring-cloud-services-starter-config-client.version>

spring-cloud-dataflow-parent/pom.xml

@@ -55,9 +55,15 @@
 		<guava.version>32.1.3-jre</guava.version>
 		<logback.version>1.2.13</logback.version>
 		<json-path.version>2.9.0</json-path.version>
+		<postgresql.version>42.7.2</postgresql.version>
 	</properties>
 	<dependencyManagement>
 		<dependencies>
+			<dependency>
+				<groupId>org.postgresql</groupId>
+				<artifactId>postgresql</artifactId>
+				<version>${postgresql.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>com.google.guava</groupId>
 				<artifactId>guava</artifactId>